clxxii NOTES. 



( 62S ; p. 442. Humboldt, Kleinere Schriften, Bd. i. S. 139. 



O 526 ) p. 442. The same, S. 202, and Kosmos, Bd. iv. S. 357, English 

 edition, p. 312. 



( 627 ) p. 442. Humboldt, Kl. Schr. Bd. i. S. 344. I have also found much 

 olivine in the " tezontle" of the Cerro de Axusco, in Mexico. Is this " tezontle" 

 cellular lava or basaltic amygdaloid ? The Mexican word tetzontli means stone- 

 hair, from tetl, stone, and tzontli, hair. 



( 62S ) p. 442. Sartorius von Waltershausen, Physisch-geographische Skizze 

 von Island, S. 64. 



( 689 ) p. 442. Berzelius, Sechster Jahresbericht, 1827, S. 392; GustavRose, 

 in Poggend. Ann. Bd. xxxiv. 1835, S. 14 ; Kosmos, Bd. i. S. 464. 



(Sao) 4 42 Jenzsch, Phonolithe, 1856, S. 37; and Senft,in his important 

 work, Classification der Felsarten, 1857, S. 187. Olivine is also found, accord- 

 ing to Scacchi, in the calcareous blocks of the Somma, together with mica and 

 augite. I call these remarkable masses emitted blocks, not lavas ; the Somma 

 has never poured forth any of the latter. 



(s 31 ) p. 442.-Poggend. Ann. Bd. xlix. 1840, S. 591, and Bd. Ixxxiv. S. 302 ; 

 Daubre'e, in the Annales des Mines, 4eme Se'rie, t. xix, 1851, p. 669. 



C 632 ) p. 443. Kosmos, Bd. i. S. 136, and Bd. iii. S. 615 ; English edition, 

 vol. i. p. 121, and vol. iii. p. 444. 



( 633 ) p. 443. The same, Bd. i. S. 465. English edition, Note 293. 



C 531 ) p. 443. Humboldt, Voyage aux Regions Equinoxiales, t. i. p. 156 

 165. (Ed. in4to.) 



(ess) p> 444 Compare Kosmos, Bd. iv. S. 365 ; English edition, p. 320. 



(636) p_ 444 Scacchi, Osservazioni critiche sulla maniera come fu sepellita 

 1'antica Pompei, 1843, p. 10 : against the view put forward by Carmine Lippi, 

 and subsequently defended by Tondi, Tenore, Pilla, and Dufre'noy, that Pompeii 

 and Herculaneum were overwhelmed and buried, not by rapilli and ashes ejected 

 directly from the Somma, but through the agency of currents of water. Roth, 

 Monogr. des Vesuvs, 1857, S. 458. (Kosmos, Bd. iv. S. 449 ; English edition, 

 p. 409.) 



(637) p < 445 Nivellement barometr. in Humboldt, Observ. Astron. vol. i. 

 p. 305, No. 149. 



(") p. 445. Kosmos, Bd. iv. S. 367 ; English edition, p. 323. 



(639) p 4 45< On the pumice hill of Tollo, which is still two days' journey 

 from the active volcano of Maypu, which latter never sent forth a morsel of such 

 pumice, see Meyen, Reise urn die Erde, Th. i. S. 338 and 358. 



( 64 ) p. 445. Poppig, Reise in Chile und Peru, Bd. i. S. 426. 



( 6I1 ) p. 445. Compare Kosmos, Bd. iv. S. 417; English edition, p. 375. 



